./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f774b3e755d7b6f786f7d23823d008ce09be620750647481355094233fd1ac8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:18:42,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:18:42,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:18:42,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:18:42,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:18:42,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:18:42,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:18:42,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:18:42,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:18:42,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:18:42,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:18:42,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:18:42,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:18:42,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:18:42,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:18:42,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:18:42,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:18:42,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:18:42,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:18:42,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:18:42,398 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:18:42,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:18:42,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:18:42,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:18:42,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:18:42,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:18:42,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:18:42,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:18:42,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:18:42,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:18:42,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:18:42,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:18:42,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:18:42,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:18:42,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:18:42,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:18:42,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:18:42,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:18:42,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:18:42,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:18:42,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:18:42,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:18:42,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:18:42,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:18:42,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:18:42,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:18:42,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:18:42,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:18:42,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:18:42,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:18:42,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:18:42,444 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:18:42,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:18:42,445 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:18:42,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:18:42,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:18:42,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:18:42,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:18:42,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:18:42,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:18:42,446 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:18:42,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:18:42,446 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:18:42,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:18:42,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:18:42,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:18:42,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:18:42,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:18:42,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:18:42,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:18:42,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:18:42,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:18:42,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:18:42,448 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:18:42,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:18:42,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:18:42,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f774b3e755d7b6f786f7d23823d008ce09be620750647481355094233fd1ac8 [2022-07-22 18:18:42,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:18:42,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:18:42,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:18:42,653 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:18:42,653 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:18:42,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-22 18:18:42,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f7e44a0/8513d316bab0488c81dbd7a9b583e48d/FLAGb7cc7fe3a [2022-07-22 18:18:43,102 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:18:43,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-22 18:18:43,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f7e44a0/8513d316bab0488c81dbd7a9b583e48d/FLAGb7cc7fe3a [2022-07-22 18:18:43,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f7e44a0/8513d316bab0488c81dbd7a9b583e48d [2022-07-22 18:18:43,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:18:43,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:18:43,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:18:43,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:18:43,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:18:43,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:18:43" (1/1) ... [2022-07-22 18:18:43,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@468a1ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43, skipping insertion in model container [2022-07-22 18:18:43,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:18:43" (1/1) ... [2022-07-22 18:18:43,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:18:43,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:18:43,283 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2022-07-22 18:18:43,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:18:43,316 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:18:43,365 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2022-07-22 18:18:43,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:18:43,390 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:18:43,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43 WrapperNode [2022-07-22 18:18:43,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:18:43,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:18:43,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:18:43,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:18:43,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43" (1/1) ... [2022-07-22 18:18:43,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43" (1/1) ... [2022-07-22 18:18:43,432 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 574 [2022-07-22 18:18:43,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:18:43,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:18:43,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:18:43,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:18:43,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43" (1/1) ... [2022-07-22 18:18:43,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43" (1/1) ... [2022-07-22 18:18:43,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43" (1/1) ... [2022-07-22 18:18:43,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43" (1/1) ... [2022-07-22 18:18:43,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43" (1/1) ... [2022-07-22 18:18:43,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43" (1/1) ... [2022-07-22 18:18:43,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43" (1/1) ... [2022-07-22 18:18:43,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:18:43,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:18:43,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:18:43,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:18:43,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43" (1/1) ... [2022-07-22 18:18:43,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:18:43,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:18:43,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 18:18:43,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 18:18:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:18:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:18:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:18:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:18:43,573 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:18:43,574 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:18:43,941 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:18:43,949 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:18:43,950 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:18:43,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:18:43 BoogieIcfgContainer [2022-07-22 18:18:43,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:18:43,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:18:43,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:18:43,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:18:43,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:18:43" (1/3) ... [2022-07-22 18:18:43,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681295f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:18:43, skipping insertion in model container [2022-07-22 18:18:43,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:43" (2/3) ... [2022-07-22 18:18:43,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681295f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:18:43, skipping insertion in model container [2022-07-22 18:18:43,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:18:43" (3/3) ... [2022-07-22 18:18:43,978 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-22 18:18:43,987 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:18:43,988 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:18:44,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:18:44,038 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3387d1ce, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6791c478 [2022-07-22 18:18:44,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:18:44,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:44,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-22 18:18:44,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:44,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:44,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:44,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1935961454, now seen corresponding path program 1 times [2022-07-22 18:18:44,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:44,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948537681] [2022-07-22 18:18:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:44,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:44,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:44,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948537681] [2022-07-22 18:18:44,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948537681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:44,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:44,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:18:44,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801227982] [2022-07-22 18:18:44,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:44,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:18:44,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:44,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:18:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:18:44,378 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 147 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:44,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:44,551 INFO L93 Difference]: Finished difference Result 468 states and 757 transitions. [2022-07-22 18:18:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:18:44,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-07-22 18:18:44,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:44,571 INFO L225 Difference]: With dead ends: 468 [2022-07-22 18:18:44,572 INFO L226 Difference]: Without dead ends: 394 [2022-07-22 18:18:44,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:44,578 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 829 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:44,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 867 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:18:44,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-07-22 18:18:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 232. [2022-07-22 18:18:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.4891774891774892) internal successors, (344), 231 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 344 transitions. [2022-07-22 18:18:44,640 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 344 transitions. Word has length 49 [2022-07-22 18:18:44,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:44,641 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 344 transitions. [2022-07-22 18:18:44,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:44,642 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 344 transitions. [2022-07-22 18:18:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-22 18:18:44,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:44,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:44,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:18:44,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:44,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1118200662, now seen corresponding path program 1 times [2022-07-22 18:18:44,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:44,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125481324] [2022-07-22 18:18:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:44,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:44,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:44,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125481324] [2022-07-22 18:18:44,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125481324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:44,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:44,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:18:44,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173086526] [2022-07-22 18:18:44,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:44,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:18:44,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:44,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:18:44,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:44,752 INFO L87 Difference]: Start difference. First operand 232 states and 344 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:44,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:44,803 INFO L93 Difference]: Finished difference Result 570 states and 864 transitions. [2022-07-22 18:18:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:18:44,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-22 18:18:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:44,806 INFO L225 Difference]: With dead ends: 570 [2022-07-22 18:18:44,806 INFO L226 Difference]: Without dead ends: 402 [2022-07-22 18:18:44,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:44,812 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 141 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:44,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 390 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:18:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-07-22 18:18:44,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2022-07-22 18:18:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.4912280701754386) internal successors, (595), 399 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 595 transitions. [2022-07-22 18:18:44,852 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 595 transitions. Word has length 52 [2022-07-22 18:18:44,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:44,853 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 595 transitions. [2022-07-22 18:18:44,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 595 transitions. [2022-07-22 18:18:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-22 18:18:44,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:44,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:44,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:18:44,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:44,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:44,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1570903849, now seen corresponding path program 1 times [2022-07-22 18:18:44,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:44,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861125510] [2022-07-22 18:18:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:44,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:44,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:44,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:44,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861125510] [2022-07-22 18:18:44,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861125510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:44,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:44,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:18:44,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270817939] [2022-07-22 18:18:44,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:44,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:18:44,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:44,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:18:44,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:44,928 INFO L87 Difference]: Start difference. First operand 400 states and 595 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:44,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:44,974 INFO L93 Difference]: Finished difference Result 980 states and 1475 transitions. [2022-07-22 18:18:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:18:44,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-22 18:18:44,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:44,978 INFO L225 Difference]: With dead ends: 980 [2022-07-22 18:18:44,978 INFO L226 Difference]: Without dead ends: 692 [2022-07-22 18:18:44,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:44,987 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 128 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:44,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 390 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:18:44,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-07-22 18:18:45,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 690. [2022-07-22 18:18:45,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 1.478955007256894) internal successors, (1019), 689 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1019 transitions. [2022-07-22 18:18:45,022 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1019 transitions. Word has length 52 [2022-07-22 18:18:45,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:45,024 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1019 transitions. [2022-07-22 18:18:45,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1019 transitions. [2022-07-22 18:18:45,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-22 18:18:45,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:45,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:45,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:18:45,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:45,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:45,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1320706551, now seen corresponding path program 1 times [2022-07-22 18:18:45,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:45,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302500334] [2022-07-22 18:18:45,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:45,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:45,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:45,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302500334] [2022-07-22 18:18:45,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302500334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:45,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:45,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:18:45,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953795279] [2022-07-22 18:18:45,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:45,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:18:45,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:45,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:18:45,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:45,112 INFO L87 Difference]: Start difference. First operand 690 states and 1019 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:45,179 INFO L93 Difference]: Finished difference Result 1813 states and 2684 transitions. [2022-07-22 18:18:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:18:45,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-22 18:18:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:45,184 INFO L225 Difference]: With dead ends: 1813 [2022-07-22 18:18:45,184 INFO L226 Difference]: Without dead ends: 1211 [2022-07-22 18:18:45,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:45,191 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 137 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:45,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 398 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:18:45,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-07-22 18:18:45,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1209. [2022-07-22 18:18:45,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 1.4403973509933774) internal successors, (1740), 1208 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1740 transitions. [2022-07-22 18:18:45,245 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1740 transitions. Word has length 52 [2022-07-22 18:18:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:45,245 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 1740 transitions. [2022-07-22 18:18:45,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1740 transitions. [2022-07-22 18:18:45,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 18:18:45,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:45,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:45,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:18:45,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:45,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:45,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1834372633, now seen corresponding path program 1 times [2022-07-22 18:18:45,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:45,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433103698] [2022-07-22 18:18:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:45,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:45,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433103698] [2022-07-22 18:18:45,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433103698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:45,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:45,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:18:45,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586977845] [2022-07-22 18:18:45,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:45,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:18:45,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:45,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:18:45,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:18:45,299 INFO L87 Difference]: Start difference. First operand 1209 states and 1740 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:45,428 INFO L93 Difference]: Finished difference Result 2352 states and 3451 transitions. [2022-07-22 18:18:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:18:45,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-22 18:18:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:45,435 INFO L225 Difference]: With dead ends: 2352 [2022-07-22 18:18:45,436 INFO L226 Difference]: Without dead ends: 2006 [2022-07-22 18:18:45,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:45,438 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 557 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:45,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 884 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:18:45,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2022-07-22 18:18:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1614. [2022-07-22 18:18:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1613 states have (on average 1.4476131432114072) internal successors, (2335), 1613 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2335 transitions. [2022-07-22 18:18:45,523 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2335 transitions. Word has length 53 [2022-07-22 18:18:45,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:45,523 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2335 transitions. [2022-07-22 18:18:45,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2335 transitions. [2022-07-22 18:18:45,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 18:18:45,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:45,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:45,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:18:45,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:45,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:45,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1785989049, now seen corresponding path program 1 times [2022-07-22 18:18:45,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:45,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813251954] [2022-07-22 18:18:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:45,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:45,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:45,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813251954] [2022-07-22 18:18:45,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813251954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:45,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:45,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:18:45,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870428791] [2022-07-22 18:18:45,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:45,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:18:45,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:45,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:18:45,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:18:45,568 INFO L87 Difference]: Start difference. First operand 1614 states and 2335 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:45,696 INFO L93 Difference]: Finished difference Result 2726 states and 4001 transitions. [2022-07-22 18:18:45,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:18:45,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-22 18:18:45,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:45,704 INFO L225 Difference]: With dead ends: 2726 [2022-07-22 18:18:45,704 INFO L226 Difference]: Without dead ends: 2380 [2022-07-22 18:18:45,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:45,706 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 563 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:45,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 859 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:18:45,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2022-07-22 18:18:45,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1925. [2022-07-22 18:18:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1924 states have (on average 1.4527027027027026) internal successors, (2795), 1924 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2795 transitions. [2022-07-22 18:18:45,822 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2795 transitions. Word has length 53 [2022-07-22 18:18:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:45,822 INFO L495 AbstractCegarLoop]: Abstraction has 1925 states and 2795 transitions. [2022-07-22 18:18:45,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2795 transitions. [2022-07-22 18:18:45,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-22 18:18:45,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:45,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:45,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:18:45,823 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:45,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:45,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1176645599, now seen corresponding path program 1 times [2022-07-22 18:18:45,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:45,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471108163] [2022-07-22 18:18:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:45,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:45,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:45,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:45,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471108163] [2022-07-22 18:18:45,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471108163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:45,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:45,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:18:45,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538389485] [2022-07-22 18:18:45,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:45,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:18:45,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:45,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:18:45,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:18:45,867 INFO L87 Difference]: Start difference. First operand 1925 states and 2795 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:46,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:46,017 INFO L93 Difference]: Finished difference Result 3143 states and 4614 transitions. [2022-07-22 18:18:46,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:18:46,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-22 18:18:46,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:46,025 INFO L225 Difference]: With dead ends: 3143 [2022-07-22 18:18:46,026 INFO L226 Difference]: Without dead ends: 2797 [2022-07-22 18:18:46,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:46,028 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 568 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:46,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 930 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:18:46,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-07-22 18:18:46,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2223. [2022-07-22 18:18:46,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 2222 states have (on average 1.4572457245724573) internal successors, (3238), 2222 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:46,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3238 transitions. [2022-07-22 18:18:46,130 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3238 transitions. Word has length 54 [2022-07-22 18:18:46,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:46,131 INFO L495 AbstractCegarLoop]: Abstraction has 2223 states and 3238 transitions. [2022-07-22 18:18:46,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:46,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3238 transitions. [2022-07-22 18:18:46,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 18:18:46,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:46,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:46,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:18:46,132 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:46,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:46,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1625242146, now seen corresponding path program 1 times [2022-07-22 18:18:46,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:46,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280686767] [2022-07-22 18:18:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:46,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:46,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:46,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280686767] [2022-07-22 18:18:46,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280686767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:46,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:46,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:18:46,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420271375] [2022-07-22 18:18:46,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:46,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:18:46,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:46,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:18:46,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:18:46,200 INFO L87 Difference]: Start difference. First operand 2223 states and 3238 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:46,459 INFO L93 Difference]: Finished difference Result 5276 states and 7686 transitions. [2022-07-22 18:18:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:18:46,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-22 18:18:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:46,468 INFO L225 Difference]: With dead ends: 5276 [2022-07-22 18:18:46,468 INFO L226 Difference]: Without dead ends: 3095 [2022-07-22 18:18:46,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:46,472 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 795 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:46,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 207 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:18:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-07-22 18:18:46,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3077. [2022-07-22 18:18:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3076 states have (on average 1.4447334200260078) internal successors, (4444), 3076 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4444 transitions. [2022-07-22 18:18:46,640 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4444 transitions. Word has length 57 [2022-07-22 18:18:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:46,641 INFO L495 AbstractCegarLoop]: Abstraction has 3077 states and 4444 transitions. [2022-07-22 18:18:46,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4444 transitions. [2022-07-22 18:18:46,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 18:18:46,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:46,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:46,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:18:46,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:46,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:46,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1198136650, now seen corresponding path program 1 times [2022-07-22 18:18:46,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:46,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795423159] [2022-07-22 18:18:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:46,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:46,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:46,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795423159] [2022-07-22 18:18:46,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795423159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:46,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:46,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:18:46,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972115217] [2022-07-22 18:18:46,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:46,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:18:46,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:46,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:18:46,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:18:46,697 INFO L87 Difference]: Start difference. First operand 3077 states and 4444 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:47,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:47,020 INFO L93 Difference]: Finished difference Result 7194 states and 10361 transitions. [2022-07-22 18:18:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:18:47,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-22 18:18:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:47,042 INFO L225 Difference]: With dead ends: 7194 [2022-07-22 18:18:47,042 INFO L226 Difference]: Without dead ends: 4204 [2022-07-22 18:18:47,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:47,047 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 792 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:47,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 197 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:18:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2022-07-22 18:18:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3077. [2022-07-22 18:18:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3076 states have (on average 1.428478543563069) internal successors, (4394), 3076 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4394 transitions. [2022-07-22 18:18:47,234 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4394 transitions. Word has length 58 [2022-07-22 18:18:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:47,235 INFO L495 AbstractCegarLoop]: Abstraction has 3077 states and 4394 transitions. [2022-07-22 18:18:47,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4394 transitions. [2022-07-22 18:18:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 18:18:47,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:47,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:47,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:18:47,237 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:47,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:47,238 INFO L85 PathProgramCache]: Analyzing trace with hash -153913959, now seen corresponding path program 1 times [2022-07-22 18:18:47,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:47,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892896537] [2022-07-22 18:18:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:47,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:47,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:47,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892896537] [2022-07-22 18:18:47,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892896537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:47,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:47,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:18:47,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288024812] [2022-07-22 18:18:47,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:47,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:18:47,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:47,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:18:47,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:18:47,276 INFO L87 Difference]: Start difference. First operand 3077 states and 4394 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:47,651 INFO L93 Difference]: Finished difference Result 7259 states and 10357 transitions. [2022-07-22 18:18:47,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:18:47,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-22 18:18:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:47,663 INFO L225 Difference]: With dead ends: 7259 [2022-07-22 18:18:47,663 INFO L226 Difference]: Without dead ends: 4260 [2022-07-22 18:18:47,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:47,668 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 737 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:47,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 209 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:18:47,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states. [2022-07-22 18:18:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 4235. [2022-07-22 18:18:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 4234 states have (on average 1.4121398205007085) internal successors, (5979), 4234 states have internal predecessors, (5979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:47,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 5979 transitions. [2022-07-22 18:18:47,943 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 5979 transitions. Word has length 58 [2022-07-22 18:18:47,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:47,944 INFO L495 AbstractCegarLoop]: Abstraction has 4235 states and 5979 transitions. [2022-07-22 18:18:47,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:47,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 5979 transitions. [2022-07-22 18:18:47,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 18:18:47,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:47,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:47,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:18:47,946 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:47,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:47,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1572096567, now seen corresponding path program 1 times [2022-07-22 18:18:47,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:47,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308479977] [2022-07-22 18:18:47,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:47,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:47,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:47,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308479977] [2022-07-22 18:18:47,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308479977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:47,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:47,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:18:47,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478890180] [2022-07-22 18:18:47,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:47,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:18:47,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:47,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:18:47,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:47,998 INFO L87 Difference]: Start difference. First operand 4235 states and 5979 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:49,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:49,364 INFO L93 Difference]: Finished difference Result 18150 states and 25629 transitions. [2022-07-22 18:18:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:18:49,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-22 18:18:49,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:49,400 INFO L225 Difference]: With dead ends: 18150 [2022-07-22 18:18:49,400 INFO L226 Difference]: Without dead ends: 16780 [2022-07-22 18:18:49,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:18:49,408 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 2503 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:49,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2503 Valid, 388 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:18:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16780 states. [2022-07-22 18:18:49,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16780 to 4247. [2022-07-22 18:18:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4247 states, 4246 states have (on average 1.4119170984455958) internal successors, (5995), 4246 states have internal predecessors, (5995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 5995 transitions. [2022-07-22 18:18:49,849 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 5995 transitions. Word has length 59 [2022-07-22 18:18:49,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:49,849 INFO L495 AbstractCegarLoop]: Abstraction has 4247 states and 5995 transitions. [2022-07-22 18:18:49,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 5995 transitions. [2022-07-22 18:18:49,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-22 18:18:49,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:49,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:49,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:18:49,853 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:49,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:49,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1131093665, now seen corresponding path program 1 times [2022-07-22 18:18:49,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:49,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466162469] [2022-07-22 18:18:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:49,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:49,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:49,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466162469] [2022-07-22 18:18:49,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466162469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:49,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:49,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:18:49,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431880416] [2022-07-22 18:18:49,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:49,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:18:49,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:18:49,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:49,918 INFO L87 Difference]: Start difference. First operand 4247 states and 5995 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:51,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:51,501 INFO L93 Difference]: Finished difference Result 16333 states and 22941 transitions. [2022-07-22 18:18:51,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:18:51,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-07-22 18:18:51,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:51,528 INFO L225 Difference]: With dead ends: 16333 [2022-07-22 18:18:51,529 INFO L226 Difference]: Without dead ends: 14103 [2022-07-22 18:18:51,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:18:51,535 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1847 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:51,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 328 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:18:51,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14103 states. [2022-07-22 18:18:52,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14103 to 4267. [2022-07-22 18:18:52,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4267 states, 4266 states have (on average 1.4109235818096577) internal successors, (6019), 4266 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:52,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 6019 transitions. [2022-07-22 18:18:52,015 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 6019 transitions. Word has length 60 [2022-07-22 18:18:52,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:52,016 INFO L495 AbstractCegarLoop]: Abstraction has 4267 states and 6019 transitions. [2022-07-22 18:18:52,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:52,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 6019 transitions. [2022-07-22 18:18:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-22 18:18:52,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:52,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:52,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:18:52,018 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:52,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1840434496, now seen corresponding path program 1 times [2022-07-22 18:18:52,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:52,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572271816] [2022-07-22 18:18:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:52,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:52,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572271816] [2022-07-22 18:18:52,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572271816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:52,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:52,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:18:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996501789] [2022-07-22 18:18:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:52,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:18:52,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:52,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:18:52,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:52,087 INFO L87 Difference]: Start difference. First operand 4267 states and 6019 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:54,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:54,428 INFO L93 Difference]: Finished difference Result 19141 states and 27003 transitions. [2022-07-22 18:18:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:18:54,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-07-22 18:18:54,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:54,460 INFO L225 Difference]: With dead ends: 19141 [2022-07-22 18:18:54,461 INFO L226 Difference]: Without dead ends: 17095 [2022-07-22 18:18:54,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:18:54,468 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 2087 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:54,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2087 Valid, 367 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:18:54,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17095 states. [2022-07-22 18:18:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17095 to 4345. [2022-07-22 18:18:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4344 states have (on average 1.408609576427256) internal successors, (6119), 4344 states have internal predecessors, (6119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 6119 transitions. [2022-07-22 18:18:55,003 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 6119 transitions. Word has length 60 [2022-07-22 18:18:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:55,003 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 6119 transitions. [2022-07-22 18:18:55,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 6119 transitions. [2022-07-22 18:18:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 18:18:55,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:55,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:55,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:18:55,007 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:55,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:55,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1556118219, now seen corresponding path program 1 times [2022-07-22 18:18:55,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:55,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890368159] [2022-07-22 18:18:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:55,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:55,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:55,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890368159] [2022-07-22 18:18:55,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890368159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:55,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:55,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:18:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106337663] [2022-07-22 18:18:55,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:55,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:18:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:18:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:18:55,184 INFO L87 Difference]: Start difference. First operand 4345 states and 6119 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:57,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:57,388 INFO L93 Difference]: Finished difference Result 14830 states and 20853 transitions. [2022-07-22 18:18:57,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 18:18:57,389 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-22 18:18:57,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:57,408 INFO L225 Difference]: With dead ends: 14830 [2022-07-22 18:18:57,408 INFO L226 Difference]: Without dead ends: 11241 [2022-07-22 18:18:57,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-07-22 18:18:57,416 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 2033 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:57,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 1099 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:18:57,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11241 states. [2022-07-22 18:18:58,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11241 to 4345. [2022-07-22 18:18:58,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4344 states have (on average 1.4072283609576428) internal successors, (6113), 4344 states have internal predecessors, (6113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:58,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 6113 transitions. [2022-07-22 18:18:58,119 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 6113 transitions. Word has length 62 [2022-07-22 18:18:58,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:58,119 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 6113 transitions. [2022-07-22 18:18:58,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:58,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 6113 transitions. [2022-07-22 18:18:58,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 18:18:58,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:58,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:58,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:18:58,122 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:18:58,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:58,123 INFO L85 PathProgramCache]: Analyzing trace with hash -443125389, now seen corresponding path program 1 times [2022-07-22 18:18:58,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:58,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953711727] [2022-07-22 18:18:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:58,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:58,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:58,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953711727] [2022-07-22 18:18:58,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953711727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:58,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:58,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:18:58,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020419565] [2022-07-22 18:18:58,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:58,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:18:58,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:58,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:18:58,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:18:58,247 INFO L87 Difference]: Start difference. First operand 4345 states and 6113 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:00,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:00,695 INFO L93 Difference]: Finished difference Result 14363 states and 20243 transitions. [2022-07-22 18:19:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 18:19:00,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-22 18:19:00,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:00,712 INFO L225 Difference]: With dead ends: 14363 [2022-07-22 18:19:00,712 INFO L226 Difference]: Without dead ends: 10913 [2022-07-22 18:19:00,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2022-07-22 18:19:00,718 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 2120 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2120 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:00,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2120 Valid, 1078 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:19:00,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10913 states. [2022-07-22 18:19:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10913 to 4261. [2022-07-22 18:19:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4261 states, 4260 states have (on average 1.4046948356807512) internal successors, (5984), 4260 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 5984 transitions. [2022-07-22 18:19:01,399 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 5984 transitions. Word has length 62 [2022-07-22 18:19:01,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:01,399 INFO L495 AbstractCegarLoop]: Abstraction has 4261 states and 5984 transitions. [2022-07-22 18:19:01,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:01,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 5984 transitions. [2022-07-22 18:19:01,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 18:19:01,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:01,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:01,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:19:01,404 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:01,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1162737396, now seen corresponding path program 1 times [2022-07-22 18:19:01,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:01,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155653094] [2022-07-22 18:19:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:01,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:01,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:01,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155653094] [2022-07-22 18:19:01,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155653094] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:01,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:01,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:19:01,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40819519] [2022-07-22 18:19:01,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:01,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:19:01,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:01,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:19:01,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:19:01,516 INFO L87 Difference]: Start difference. First operand 4261 states and 5984 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:04,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:04,096 INFO L93 Difference]: Finished difference Result 14903 states and 20963 transitions. [2022-07-22 18:19:04,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 18:19:04,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-22 18:19:04,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:04,110 INFO L225 Difference]: With dead ends: 14903 [2022-07-22 18:19:04,110 INFO L226 Difference]: Without dead ends: 11324 [2022-07-22 18:19:04,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-07-22 18:19:04,116 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1549 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:04,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1554 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 18:19:04,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11324 states. [2022-07-22 18:19:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11324 to 4082. [2022-07-22 18:19:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4082 states, 4081 states have (on average 1.4021073266356285) internal successors, (5722), 4081 states have internal predecessors, (5722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:04,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 5722 transitions. [2022-07-22 18:19:04,843 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 5722 transitions. Word has length 62 [2022-07-22 18:19:04,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:04,843 INFO L495 AbstractCegarLoop]: Abstraction has 4082 states and 5722 transitions. [2022-07-22 18:19:04,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:04,844 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 5722 transitions. [2022-07-22 18:19:04,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 18:19:04,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:04,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:04,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:19:04,846 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:04,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:04,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1143949417, now seen corresponding path program 1 times [2022-07-22 18:19:04,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:04,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726828138] [2022-07-22 18:19:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:04,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:04,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:04,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726828138] [2022-07-22 18:19:04,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726828138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:04,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:04,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:19:04,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700970243] [2022-07-22 18:19:04,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:04,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:19:04,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:04,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:19:04,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:04,868 INFO L87 Difference]: Start difference. First operand 4082 states and 5722 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:05,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:05,508 INFO L93 Difference]: Finished difference Result 6091 states and 8563 transitions. [2022-07-22 18:19:05,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:19:05,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-22 18:19:05,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:05,513 INFO L225 Difference]: With dead ends: 6091 [2022-07-22 18:19:05,513 INFO L226 Difference]: Without dead ends: 3975 [2022-07-22 18:19:05,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:05,516 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 130 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:05,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 473 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2022-07-22 18:19:06,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3973. [2022-07-22 18:19:06,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3973 states, 3972 states have (on average 1.3862034239677745) internal successors, (5506), 3972 states have internal predecessors, (5506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3973 states to 3973 states and 5506 transitions. [2022-07-22 18:19:06,185 INFO L78 Accepts]: Start accepts. Automaton has 3973 states and 5506 transitions. Word has length 63 [2022-07-22 18:19:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:06,185 INFO L495 AbstractCegarLoop]: Abstraction has 3973 states and 5506 transitions. [2022-07-22 18:19:06,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3973 states and 5506 transitions. [2022-07-22 18:19:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 18:19:06,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:06,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:06,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 18:19:06,187 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:06,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1363691260, now seen corresponding path program 1 times [2022-07-22 18:19:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:06,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477506650] [2022-07-22 18:19:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:06,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:06,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477506650] [2022-07-22 18:19:06,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477506650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:06,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:06,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:19:06,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175855655] [2022-07-22 18:19:06,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:06,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:19:06,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:06,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:19:06,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:06,212 INFO L87 Difference]: Start difference. First operand 3973 states and 5506 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:06,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:06,757 INFO L93 Difference]: Finished difference Result 5478 states and 7588 transitions. [2022-07-22 18:19:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:19:06,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-22 18:19:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:06,761 INFO L225 Difference]: With dead ends: 5478 [2022-07-22 18:19:06,761 INFO L226 Difference]: Without dead ends: 3380 [2022-07-22 18:19:06,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:06,763 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 118 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:06,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 462 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2022-07-22 18:19:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 3378. [2022-07-22 18:19:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 3377 states have (on average 1.3591945513769619) internal successors, (4590), 3377 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 4590 transitions. [2022-07-22 18:19:07,333 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 4590 transitions. Word has length 63 [2022-07-22 18:19:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:07,333 INFO L495 AbstractCegarLoop]: Abstraction has 3378 states and 4590 transitions. [2022-07-22 18:19:07,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:07,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 4590 transitions. [2022-07-22 18:19:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 18:19:07,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:07,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:07,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 18:19:07,335 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:07,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1254313906, now seen corresponding path program 1 times [2022-07-22 18:19:07,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:07,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136171014] [2022-07-22 18:19:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:07,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:07,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:07,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136171014] [2022-07-22 18:19:07,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136171014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:07,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:07,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:19:07,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481912240] [2022-07-22 18:19:07,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:07,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:19:07,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:07,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:19:07,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:07,358 INFO L87 Difference]: Start difference. First operand 3378 states and 4590 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:07,811 INFO L93 Difference]: Finished difference Result 4127 states and 5582 transitions. [2022-07-22 18:19:07,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:19:07,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-22 18:19:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:07,815 INFO L225 Difference]: With dead ends: 4127 [2022-07-22 18:19:07,815 INFO L226 Difference]: Without dead ends: 2783 [2022-07-22 18:19:07,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:07,817 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 148 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:07,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 477 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:07,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2022-07-22 18:19:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2781. [2022-07-22 18:19:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2781 states, 2780 states have (on average 1.3273381294964028) internal successors, (3690), 2780 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:08,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 3690 transitions. [2022-07-22 18:19:08,284 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 3690 transitions. Word has length 63 [2022-07-22 18:19:08,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:08,284 INFO L495 AbstractCegarLoop]: Abstraction has 2781 states and 3690 transitions. [2022-07-22 18:19:08,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:08,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 3690 transitions. [2022-07-22 18:19:08,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 18:19:08,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:08,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:08,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 18:19:08,286 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:08,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:08,286 INFO L85 PathProgramCache]: Analyzing trace with hash -424034558, now seen corresponding path program 1 times [2022-07-22 18:19:08,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:08,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48386101] [2022-07-22 18:19:08,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:08,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:08,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:08,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48386101] [2022-07-22 18:19:08,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48386101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:08,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:08,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-22 18:19:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196053510] [2022-07-22 18:19:08,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:08,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-22 18:19:08,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:08,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-22 18:19:08,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-07-22 18:19:08,778 INFO L87 Difference]: Start difference. First operand 2781 states and 3690 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:12,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:12,898 INFO L93 Difference]: Finished difference Result 6802 states and 9124 transitions. [2022-07-22 18:19:12,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 18:19:12,904 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-22 18:19:12,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:12,911 INFO L225 Difference]: With dead ends: 6802 [2022-07-22 18:19:12,911 INFO L226 Difference]: Without dead ends: 6735 [2022-07-22 18:19:12,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=345, Invalid=1461, Unknown=0, NotChecked=0, Total=1806 [2022-07-22 18:19:12,913 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 2067 mSDsluCounter, 6519 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2067 SdHoareTripleChecker+Valid, 7018 SdHoareTripleChecker+Invalid, 3987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:12,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2067 Valid, 7018 Invalid, 3987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3954 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 18:19:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6735 states. [2022-07-22 18:19:13,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6735 to 2787. [2022-07-22 18:19:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2786 states have (on average 1.3269921033740129) internal successors, (3697), 2786 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:13,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 3697 transitions. [2022-07-22 18:19:13,430 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 3697 transitions. Word has length 64 [2022-07-22 18:19:13,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:13,430 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 3697 transitions. [2022-07-22 18:19:13,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:13,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 3697 transitions. [2022-07-22 18:19:13,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 18:19:13,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:13,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:13,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 18:19:13,432 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash 250019910, now seen corresponding path program 1 times [2022-07-22 18:19:13,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:13,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420656477] [2022-07-22 18:19:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:13,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:13,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:13,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420656477] [2022-07-22 18:19:13,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420656477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:13,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:13,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-22 18:19:13,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195718977] [2022-07-22 18:19:13,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:13,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-22 18:19:13,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:13,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-22 18:19:13,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2022-07-22 18:19:13,927 INFO L87 Difference]: Start difference. First operand 2787 states and 3697 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:19,093 INFO L93 Difference]: Finished difference Result 8295 states and 11159 transitions. [2022-07-22 18:19:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 18:19:19,093 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-22 18:19:19,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:19,101 INFO L225 Difference]: With dead ends: 8295 [2022-07-22 18:19:19,101 INFO L226 Difference]: Without dead ends: 8228 [2022-07-22 18:19:19,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=472, Invalid=1978, Unknown=0, NotChecked=0, Total=2450 [2022-07-22 18:19:19,103 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 1962 mSDsluCounter, 7555 mSDsCounter, 0 mSdLazyCounter, 4391 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 8104 SdHoareTripleChecker+Invalid, 4419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:19,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1962 Valid, 8104 Invalid, 4419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4391 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 18:19:19,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8228 states. [2022-07-22 18:19:19,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8228 to 2787. [2022-07-22 18:19:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2786 states have (on average 1.3266331658291457) internal successors, (3696), 2786 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 3696 transitions. [2022-07-22 18:19:19,689 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 3696 transitions. Word has length 64 [2022-07-22 18:19:19,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:19,690 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 3696 transitions. [2022-07-22 18:19:19,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:19,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 3696 transitions. [2022-07-22 18:19:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 18:19:19,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:19,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:19,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 18:19:19,691 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:19,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:19,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1940234754, now seen corresponding path program 1 times [2022-07-22 18:19:19,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:19,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008178985] [2022-07-22 18:19:19,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:19,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:20,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:20,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008178985] [2022-07-22 18:19:20,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008178985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:20,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:20,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-22 18:19:20,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251968969] [2022-07-22 18:19:20,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:20,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-22 18:19:20,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:20,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-22 18:19:20,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-07-22 18:19:20,224 INFO L87 Difference]: Start difference. First operand 2787 states and 3696 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:24,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:24,865 INFO L93 Difference]: Finished difference Result 6658 states and 8925 transitions. [2022-07-22 18:19:24,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 18:19:24,868 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-22 18:19:24,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:24,876 INFO L225 Difference]: With dead ends: 6658 [2022-07-22 18:19:24,876 INFO L226 Difference]: Without dead ends: 6591 [2022-07-22 18:19:24,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=391, Invalid=1865, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 18:19:24,878 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 2058 mSDsluCounter, 6058 mSDsCounter, 0 mSdLazyCounter, 3771 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 6531 SdHoareTripleChecker+Invalid, 3814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:24,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 6531 Invalid, 3814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3771 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 18:19:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2022-07-22 18:19:25,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 2799. [2022-07-22 18:19:25,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2798 states have (on average 1.3263045032165832) internal successors, (3711), 2798 states have internal predecessors, (3711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3711 transitions. [2022-07-22 18:19:25,507 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3711 transitions. Word has length 64 [2022-07-22 18:19:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:25,508 INFO L495 AbstractCegarLoop]: Abstraction has 2799 states and 3711 transitions. [2022-07-22 18:19:25,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:25,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3711 transitions. [2022-07-22 18:19:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 18:19:25,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:25,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:25,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 18:19:25,509 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:25,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:25,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1380487795, now seen corresponding path program 1 times [2022-07-22 18:19:25,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:25,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815396162] [2022-07-22 18:19:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:25,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:25,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:25,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815396162] [2022-07-22 18:19:25,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815396162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:25,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:25,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:19:25,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33573435] [2022-07-22 18:19:25,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:25,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:19:25,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:25,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:19:25,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:25,547 INFO L87 Difference]: Start difference. First operand 2799 states and 3711 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:26,368 INFO L93 Difference]: Finished difference Result 5042 states and 6736 transitions. [2022-07-22 18:19:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:19:26,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-22 18:19:26,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:26,373 INFO L225 Difference]: With dead ends: 5042 [2022-07-22 18:19:26,373 INFO L226 Difference]: Without dead ends: 3696 [2022-07-22 18:19:26,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:26,375 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 150 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:26,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 305 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2022-07-22 18:19:26,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 2633. [2022-07-22 18:19:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2632 states have (on average 1.3248480243161094) internal successors, (3487), 2632 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:26,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3487 transitions. [2022-07-22 18:19:26,960 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3487 transitions. Word has length 64 [2022-07-22 18:19:26,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:26,960 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 3487 transitions. [2022-07-22 18:19:26,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:26,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3487 transitions. [2022-07-22 18:19:26,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 18:19:26,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:26,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:26,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 18:19:26,961 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:26,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:26,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1914859187, now seen corresponding path program 1 times [2022-07-22 18:19:26,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:26,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201096950] [2022-07-22 18:19:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:26,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:26,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:26,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201096950] [2022-07-22 18:19:26,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201096950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:26,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:26,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:19:26,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852680901] [2022-07-22 18:19:26,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:26,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:19:26,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:26,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:19:26,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:26,979 INFO L87 Difference]: Start difference. First operand 2633 states and 3487 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:27,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:27,776 INFO L93 Difference]: Finished difference Result 4774 states and 6376 transitions. [2022-07-22 18:19:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:19:27,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-22 18:19:27,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:27,780 INFO L225 Difference]: With dead ends: 4774 [2022-07-22 18:19:27,780 INFO L226 Difference]: Without dead ends: 3450 [2022-07-22 18:19:27,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:27,784 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 152 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:27,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 306 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2022-07-22 18:19:28,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 2453. [2022-07-22 18:19:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2452 states have (on average 1.3250407830342577) internal successors, (3249), 2452 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3249 transitions. [2022-07-22 18:19:28,341 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3249 transitions. Word has length 64 [2022-07-22 18:19:28,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:28,342 INFO L495 AbstractCegarLoop]: Abstraction has 2453 states and 3249 transitions. [2022-07-22 18:19:28,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:28,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3249 transitions. [2022-07-22 18:19:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 18:19:28,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:28,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:28,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 18:19:28,345 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:28,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:28,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1138559632, now seen corresponding path program 1 times [2022-07-22 18:19:28,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:28,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208919157] [2022-07-22 18:19:28,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:28,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:28,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:28,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208919157] [2022-07-22 18:19:28,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208919157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:28,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:28,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-22 18:19:28,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347447502] [2022-07-22 18:19:28,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:28,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 18:19:28,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 18:19:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-22 18:19:28,645 INFO L87 Difference]: Start difference. First operand 2453 states and 3249 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:33,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:33,535 INFO L93 Difference]: Finished difference Result 8760 states and 11781 transitions. [2022-07-22 18:19:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 18:19:33,536 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-22 18:19:33,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:33,544 INFO L225 Difference]: With dead ends: 8760 [2022-07-22 18:19:33,544 INFO L226 Difference]: Without dead ends: 8534 [2022-07-22 18:19:33,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=448, Invalid=1714, Unknown=0, NotChecked=0, Total=2162 [2022-07-22 18:19:33,546 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 2417 mSDsluCounter, 6602 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2417 SdHoareTripleChecker+Valid, 7215 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:33,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2417 Valid, 7215 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 18:19:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2022-07-22 18:19:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 2405. [2022-07-22 18:19:34,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2404 states have (on average 1.3248752079866888) internal successors, (3185), 2404 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 3185 transitions. [2022-07-22 18:19:34,243 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 3185 transitions. Word has length 65 [2022-07-22 18:19:34,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:34,243 INFO L495 AbstractCegarLoop]: Abstraction has 2405 states and 3185 transitions. [2022-07-22 18:19:34,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:34,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 3185 transitions. [2022-07-22 18:19:34,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 18:19:34,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:34,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:34,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 18:19:34,245 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:34,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:34,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1339466768, now seen corresponding path program 1 times [2022-07-22 18:19:34,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:34,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460251298] [2022-07-22 18:19:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:34,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:34,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:34,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460251298] [2022-07-22 18:19:34,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460251298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:34,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:34,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:19:34,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997230273] [2022-07-22 18:19:34,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:34,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:19:34,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:34,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:19:34,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:19:34,467 INFO L87 Difference]: Start difference. First operand 2405 states and 3185 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:36,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:36,794 INFO L93 Difference]: Finished difference Result 5167 states and 6936 transitions. [2022-07-22 18:19:36,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:19:36,795 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-22 18:19:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:36,800 INFO L225 Difference]: With dead ends: 5167 [2022-07-22 18:19:36,800 INFO L226 Difference]: Without dead ends: 4815 [2022-07-22 18:19:36,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-07-22 18:19:36,801 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1682 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:36,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1682 Valid, 2045 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:19:36,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4815 states. [2022-07-22 18:19:37,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4815 to 2329. [2022-07-22 18:19:37,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2328 states have (on average 1.3260309278350515) internal successors, (3087), 2328 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 3087 transitions. [2022-07-22 18:19:37,542 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 3087 transitions. Word has length 65 [2022-07-22 18:19:37,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:37,542 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 3087 transitions. [2022-07-22 18:19:37,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 3087 transitions. [2022-07-22 18:19:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 18:19:37,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:37,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:37,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 18:19:37,544 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash -427633856, now seen corresponding path program 1 times [2022-07-22 18:19:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:37,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419866597] [2022-07-22 18:19:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:37,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:37,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:37,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419866597] [2022-07-22 18:19:37,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419866597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:37,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:37,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:19:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645790408] [2022-07-22 18:19:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:37,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:19:37,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:37,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:19:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:19:37,577 INFO L87 Difference]: Start difference. First operand 2329 states and 3087 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:38,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:38,343 INFO L93 Difference]: Finished difference Result 2335 states and 3090 transitions. [2022-07-22 18:19:38,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:19:38,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-22 18:19:38,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:38,346 INFO L225 Difference]: With dead ends: 2335 [2022-07-22 18:19:38,346 INFO L226 Difference]: Without dead ends: 2128 [2022-07-22 18:19:38,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:19:38,348 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 495 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:38,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 603 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:38,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2022-07-22 18:19:39,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2124. [2022-07-22 18:19:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2123 states have (on average 1.3306641544983513) internal successors, (2825), 2123 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2825 transitions. [2022-07-22 18:19:39,072 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 2825 transitions. Word has length 68 [2022-07-22 18:19:39,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:39,073 INFO L495 AbstractCegarLoop]: Abstraction has 2124 states and 2825 transitions. [2022-07-22 18:19:39,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 2825 transitions. [2022-07-22 18:19:39,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-22 18:19:39,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:39,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:39,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 18:19:39,074 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:39,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:39,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1513353753, now seen corresponding path program 1 times [2022-07-22 18:19:39,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:39,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675454217] [2022-07-22 18:19:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:39,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:39,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:39,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675454217] [2022-07-22 18:19:39,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675454217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:39,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:39,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:19:39,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938297269] [2022-07-22 18:19:39,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:39,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:19:39,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:39,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:19:39,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:39,099 INFO L87 Difference]: Start difference. First operand 2124 states and 2825 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:40,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:40,427 INFO L93 Difference]: Finished difference Result 5403 states and 7287 transitions. [2022-07-22 18:19:40,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:19:40,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-22 18:19:40,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:40,432 INFO L225 Difference]: With dead ends: 5403 [2022-07-22 18:19:40,432 INFO L226 Difference]: Without dead ends: 3686 [2022-07-22 18:19:40,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:40,433 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 98 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:40,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 394 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:40,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2022-07-22 18:19:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3458. [2022-07-22 18:19:41,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3457 states have (on average 1.3358403239803298) internal successors, (4618), 3457 states have internal predecessors, (4618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4618 transitions. [2022-07-22 18:19:41,630 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4618 transitions. Word has length 71 [2022-07-22 18:19:41,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:41,631 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4618 transitions. [2022-07-22 18:19:41,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4618 transitions. [2022-07-22 18:19:41,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 18:19:41,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:41,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:41,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 18:19:41,632 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:41,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:41,633 INFO L85 PathProgramCache]: Analyzing trace with hash 87467842, now seen corresponding path program 1 times [2022-07-22 18:19:41,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:41,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969136469] [2022-07-22 18:19:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:41,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:41,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:41,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969136469] [2022-07-22 18:19:41,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969136469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:41,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:41,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:19:41,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100222848] [2022-07-22 18:19:41,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:41,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:19:41,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:41,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:19:41,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:41,659 INFO L87 Difference]: Start difference. First operand 3458 states and 4618 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:43,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:43,878 INFO L93 Difference]: Finished difference Result 9250 states and 12428 transitions. [2022-07-22 18:19:43,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:19:43,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-07-22 18:19:43,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:43,885 INFO L225 Difference]: With dead ends: 9250 [2022-07-22 18:19:43,885 INFO L226 Difference]: Without dead ends: 6199 [2022-07-22 18:19:43,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:43,889 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 88 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:43,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 385 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:43,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6199 states. [2022-07-22 18:19:45,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6199 to 5745. [2022-07-22 18:19:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5745 states, 5744 states have (on average 1.3314763231197773) internal successors, (7648), 5744 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5745 states to 5745 states and 7648 transitions. [2022-07-22 18:19:45,922 INFO L78 Accepts]: Start accepts. Automaton has 5745 states and 7648 transitions. Word has length 72 [2022-07-22 18:19:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:45,922 INFO L495 AbstractCegarLoop]: Abstraction has 5745 states and 7648 transitions. [2022-07-22 18:19:45,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:45,922 INFO L276 IsEmpty]: Start isEmpty. Operand 5745 states and 7648 transitions. [2022-07-22 18:19:45,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 18:19:45,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:45,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:45,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 18:19:45,924 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:45,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:45,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1178358807, now seen corresponding path program 1 times [2022-07-22 18:19:45,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:45,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147161788] [2022-07-22 18:19:45,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:45,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:45,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:45,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147161788] [2022-07-22 18:19:45,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147161788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:45,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:45,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:19:45,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916532947] [2022-07-22 18:19:45,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:45,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:19:45,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:45,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:19:45,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:45,947 INFO L87 Difference]: Start difference. First operand 5745 states and 7648 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:49,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:49,764 INFO L93 Difference]: Finished difference Result 15708 states and 20885 transitions. [2022-07-22 18:19:49,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:19:49,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-07-22 18:19:49,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:49,775 INFO L225 Difference]: With dead ends: 15708 [2022-07-22 18:19:49,775 INFO L226 Difference]: Without dead ends: 10298 [2022-07-22 18:19:49,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:49,780 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 98 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:49,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 370 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:49,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10298 states. [2022-07-22 18:19:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10298 to 9504. [2022-07-22 18:19:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9504 states, 9503 states have (on average 1.318636220141008) internal successors, (12531), 9503 states have internal predecessors, (12531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9504 states to 9504 states and 12531 transitions. [2022-07-22 18:19:53,300 INFO L78 Accepts]: Start accepts. Automaton has 9504 states and 12531 transitions. Word has length 74 [2022-07-22 18:19:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:53,300 INFO L495 AbstractCegarLoop]: Abstraction has 9504 states and 12531 transitions. [2022-07-22 18:19:53,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:53,300 INFO L276 IsEmpty]: Start isEmpty. Operand 9504 states and 12531 transitions. [2022-07-22 18:19:53,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 18:19:53,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:53,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:53,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 18:19:53,301 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:19:53,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1504202340, now seen corresponding path program 1 times [2022-07-22 18:19:53,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:53,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853005336] [2022-07-22 18:19:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:53,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:53,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:53,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853005336] [2022-07-22 18:19:53,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853005336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:53,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:53,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:19:53,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444708671] [2022-07-22 18:19:53,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:53,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:19:53,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:53,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:19:53,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:19:53,347 INFO L87 Difference]: Start difference. First operand 9504 states and 12531 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:20:01,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:20:01,952 INFO L93 Difference]: Finished difference Result 20282 states and 26364 transitions. [2022-07-22 18:20:01,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:20:01,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-22 18:20:01,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:20:01,982 INFO L225 Difference]: With dead ends: 20282 [2022-07-22 18:20:01,983 INFO L226 Difference]: Without dead ends: 20280 [2022-07-22 18:20:01,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:20:01,989 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 295 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:20:01,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 903 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:20:02,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20280 states. [2022-07-22 18:20:06,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20280 to 10488. [2022-07-22 18:20:06,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10488 states, 10487 states have (on average 1.2887384380661773) internal successors, (13515), 10487 states have internal predecessors, (13515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:20:06,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10488 states to 10488 states and 13515 transitions. [2022-07-22 18:20:06,360 INFO L78 Accepts]: Start accepts. Automaton has 10488 states and 13515 transitions. Word has length 75 [2022-07-22 18:20:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:20:06,361 INFO L495 AbstractCegarLoop]: Abstraction has 10488 states and 13515 transitions. [2022-07-22 18:20:06,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:20:06,361 INFO L276 IsEmpty]: Start isEmpty. Operand 10488 states and 13515 transitions. [2022-07-22 18:20:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 18:20:06,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:20:06,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:20:06,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 18:20:06,362 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:20:06,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:20:06,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1668309570, now seen corresponding path program 1 times [2022-07-22 18:20:06,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:20:06,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106873114] [2022-07-22 18:20:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:20:06,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:20:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:20:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:20:06,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:20:06,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106873114] [2022-07-22 18:20:06,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106873114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:20:06,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:20:06,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:20:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082499444] [2022-07-22 18:20:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:20:06,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:20:06,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:20:06,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:20:06,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:20:06,387 INFO L87 Difference]: Start difference. First operand 10488 states and 13515 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:20:12,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:20:12,610 INFO L93 Difference]: Finished difference Result 25636 states and 32849 transitions. [2022-07-22 18:20:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:20:12,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-07-22 18:20:12,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:20:12,628 INFO L225 Difference]: With dead ends: 25636 [2022-07-22 18:20:12,628 INFO L226 Difference]: Without dead ends: 15494 [2022-07-22 18:20:12,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:20:12,638 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 113 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:20:12,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 313 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:20:12,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15494 states. [2022-07-22 18:20:19,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15494 to 15492. [2022-07-22 18:20:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15492 states, 15491 states have (on average 1.2618294493576916) internal successors, (19547), 15491 states have internal predecessors, (19547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:20:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15492 states to 15492 states and 19547 transitions. [2022-07-22 18:20:19,192 INFO L78 Accepts]: Start accepts. Automaton has 15492 states and 19547 transitions. Word has length 76 [2022-07-22 18:20:19,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:20:19,192 INFO L495 AbstractCegarLoop]: Abstraction has 15492 states and 19547 transitions. [2022-07-22 18:20:19,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:20:19,192 INFO L276 IsEmpty]: Start isEmpty. Operand 15492 states and 19547 transitions. [2022-07-22 18:20:19,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 18:20:19,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:20:19,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:20:19,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 18:20:19,196 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:20:19,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:20:19,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1627547032, now seen corresponding path program 1 times [2022-07-22 18:20:19,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:20:19,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940008668] [2022-07-22 18:20:19,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:20:19,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:20:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:20:19,303 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:20:19,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:20:19,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940008668] [2022-07-22 18:20:19,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940008668] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 18:20:19,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134636815] [2022-07-22 18:20:19,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:20:19,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:20:19,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:20:19,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 18:20:19,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 18:20:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:20:19,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 18:20:19,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 18:21:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:49,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 18:21:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:21:50,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134636815] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 18:21:50,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 18:21:50,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2022-07-22 18:21:50,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158911452] [2022-07-22 18:21:50,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 18:21:50,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-22 18:21:50,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:21:50,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-22 18:21:50,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2022-07-22 18:21:50,703 INFO L87 Difference]: Start difference. First operand 15492 states and 19547 transitions. Second operand has 33 states, 33 states have (on average 7.7272727272727275) internal successors, (255), 32 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)